CN207396745U

CN207396745U - A kind of double antenna high dynamic gnss receivers

Info

Publication number: CN207396745U
Application number: CN201720891026.9U
Authority: CN
Inventors: 谭敏强
Original assignee: Beijing Star Mdt Infotech Ltd
Current assignee: Beijing Star Mdt Infotech Ltd
Priority date: 2017-07-21
Filing date: 2017-07-21
Publication date: 2018-05-22
Anticipated expiration: 2027-07-21

Abstract

A kind of double antenna high-dynamic GNSS receiver of the utility model, including there are two receiver board and main control board, core information processor, electric power management circuit and interface management circuitry are provided on main control board built in special outer box, box.When main control board works, the satellite-signal that two receiver boards receive forward and backward antenna respectively carries out the location information resolving of itself；Two receiver card cards at work, respectively issue the location information and satellite raw information that oneself is resolved the core information processor of main control board.The advantages of this implementation is new be：Ensure that still effective data can be exported to core information processor under conditions of high dynamic, it can be by the difference in height and horizontal level difference of two three-dimensional positions of calculating come computer azimuth and posture, so as to preferably solve the stability and reliability that double antenna GNSS receiver uses in high dynamic field, it fully ensures that the real-time monitoring quality to carrier course and posture, becomes a kind of double antenna GNSS receiver for integrating high dynamic, high-precision, precision time service, accurate direction finding, real-time attitude.

Description

A kind of double antenna high dynamic gnss receivers

Technical field

The utility model is related to satellite navigation receiver fields, and in particular to a kind of double antenna high-dynamic GNSS receiver.

Background technology

With the development in satellite navigation receiver field, the use of GNSS receiver is more and more common, and application range is also got over Come more extensive.

Traditional GNSS receiver simply works under static or low-speed conditions, can not meet in high dynamic scene, right The requirement in direction, attitude algorithm stability and reliability.

With the development in satellite navigation receiver field, it is desirable that while realizing high dynamic, to realizing precision positions positioning； The accurately time is provided；Measure accurate direction；Detect that real-time attitude information etc. made higher requirement.

In the prior art, single antenna GNSS receiver there are the defects of, cause can not to meet art requirement, there is an urgent need to It improves.Therefore double antenna high dynamic receiver comes into being.

The content of the invention

The utility model aim is to provide a kind of collection high dynamic, high-precision, precision time service, accurate direction finding, real-time attitude It, can be by the difference in height and horizontal level difference of two three-dimensional positions of calculating come the side of calculating in the double antenna GNSS receiver of one Position and posture, so as to preferably solve the stability and reliability that double antenna GNSS receiver uses in high dynamic field, fully Ensure the real-time monitoring quality to carrier course and posture.

In order to achieve the above objectives, a kind of double antenna high-dynamic GNSS receiver provided by the utility model, including special outer Box, the special outer box are built-in with receiver board and main control board, forward and backward antenna, institute are equipped in the special outer box It states receiver card and is arranged with two, preceding antenna is connected with the first receiver board, and aft antenna is connected with the second receiver board, and two In a receiver board, any one sends position to another receiver board and resolves as reference receiver board Update information；Core information processor, electric power management circuit and interface management circuitry are provided on the main control board；Two The receiver board receive respectively the forward and backward antenna satellite-signal carry out itself location information resolve, and respectively Location information and satellite raw information that oneself is resolved issue the core information processor of the main control board；The core letter Breath processor receives and resolves information and the inertial guidance data that two receivers are sent.

The utility model double antenna high-dynamic GNSS receiver, wherein described two receiver boards include successively respectively Preamplifier, low-converter, A/D converter and the band signal processor of connection, the band signal processor tool There are the FPGA and dsp chip of the ability of igh-speed wire-rod production line, FPGA receives the digital medium-frequency signal of the A/D converter output, DSP implements to control by controlling bus to FPGA, replicates the local carrier and pseudo-code signal consistent with receiving signal, realizes signal Capture, tracking, bit synchronous, frame synchronization process.

The utility model double antenna high-dynamic GNSS receiver, wherein box body of the special outer box for square, described Box body is formed by monoblock aluminium ingot milling, retains bottom opening, and outer eaves is adopted with bottom plate and is screwed.

The utility model double antenna high-dynamic GNSS receiver, wherein coated with the celadon that thermal diffusivity is good on the box body Metallic paint, the celadon metallic paint is aluminium silver powder, green light powder, gold printing slurry, golden and silver printing slurry, silver powder stamp Slurry.

The utility model double antenna high-dynamic GNSS receiver, wherein the box body is equipped with clamping apparatus.

The utility model has the advantage that compared with prior art：Due to being provided with two receiver boards, wherein arbitrarily One is used as reference receiver board, and sending position to another receiver board resolves update information, can be by calculating two The difference in height and horizontal level difference of a three-dimensional position come computer azimuth and posture, so as to preferably solve double antenna GNSS receiver The stability and reliability used in high dynamic field fully ensures that the real-time monitoring quality to carrier course and posture, becomes A kind of double antenna GNSS receiver for integrating high dynamic, high-precision, precision time service, accurate direction finding, real-time attitude.

Further, preferably, there are special outer box, durable beauty is solid reliable, easy for installation,

Further, software and hardware combining has online programmable, can partly reconfigure, the technical advantages such as device, reaches The product of difference in functionality is realized with smaller hardware size, many need of user are met on a relatively general platform base It asks, resource utilization is high.Environmental suitability is strong, can be suitable for various different types of business.Large capacity, high-performance, it is low into This, highly integrated and reserved secondary research and development space.

Description of the drawings

Fig. 1 is a kind of double antenna high dynamic high precision GNSS receiver circuit structure diagram of the utility model；

Fig. 2 is the circuit structure diagram of receiver board.

Specific embodiment

The utility model is done with reference to example and is further described in detail, but the embodiment of the utility model is unlimited In this.

As shown in Figure 1, a kind of double antenna high dynamic high precision GNSS receiver of the utility model, including special outer box 101, Special outer box 101 are the box body of square, and box body is formed by monoblock aluminium ingot milling, retain bottom opening, and outer eaves and bottom plate It adopts and is screwed.Coated with the celadon metallic paint that thermal diffusivity is good on box body, celadon metallic paint is aluminium silver powder, green light Powder, gold printing slurry, golden and silver printing slurry, silver powder printing paste.Box body is equipped with clamping apparatus 102.

Forward and backward antenna is installed, special outer box 101 are built-in with receiver board and main control board in special outer box 101 105.There are two receiver board 105 is set, preceding antenna is connected with the first receiver board 103, aft antenna and the second receiver card Card 104 is connected.In two receiver boards, any one sends as reference receiver board to another receiver board Position resolves update information.

Core information processor 106, electric power management circuit 108 and interface management circuitry 107 are provided on main control board.

The satellite-signal that two receiver boards each receive forward and backward antenna respectively carries out the location information resolving of itself, And the location information and satellite raw information that oneself is resolved are issued respectively the core information processor 106 of main control board；Core Heart message handler 106 receives and resolves information and the inertial guidance data that two receivers are sent.

As Figure 1-Figure 2, two receiver boards 103,104 include respectively sequentially connected preamplifier, under Frequency converter, A/D converter and band signal processor, band signal processor have the ability of igh-speed wire-rod production line FPGA and dsp chip, FPGA receive the digital medium-frequency signal of A/D converter output, and DSP implements to control by controlling bus to FPGA System, replicate with the consistent local carrier and pseudo-code signal of reception signal, realize the capture of signal, tracking, bit synchronous, frame synchronization Processing.

In said program, the output terminal of A/D converter is connected to band signal processor input terminal, while using two Connecting line is attached, that is, redundancy link, and during in case wherein a connecting line disconnecting, another can meet using will It asks, the visible satellite signal received is transformed into digital medium-frequency signal by the radio frequency front-end device, and is filtered and gain Control.

In said program, when main control board works, that specific receiver board, can be by initially setting as benchmark It is fixed.

In said program, the CPU uses the NAND Flash of large capacity, multiple and different versions of base band FPGA programs It is all embedded, with software, realizes the online reconfiguration of difference in functionality.

In said program, double antenna GNSS receiver is equipped with working power.

Further, preferably, the power supply be 5-6V, current limliting 1A power supplys.

Further, preferably, the band signal processor uses the intelligence based on Doppler shift compensation Can high dynamic frequency sweep, exquisite Doppler frequency interpolation, highly sensitive intelligent peak value find, be innovative based on " multistage code The technologies such as the time-frequency two-dimensional search of matched filter+FFT " frameworks, realize reliable and stable acquisition and tracking.

Further, preferably, the CPU can be the SoC of ARM or embedded ARM.

Further, preferably, high speed FPGA, embedded efficient resolving may be employed in core information process circuit Software

It needs when the utility model is used at a temperature of -40 DEG C ~+80 DEG C.The external 5V power supplys of low frequency interface and serial ports, High frequency interfaces connect antenna.After the completion of connection, the satellite-signal that antenna receives is through sequentially connected preamplifier, down coversion Device, A/D converter processing are converted into digital medium-frequency signal, by FPGA plus DSP complete acquisition and tracking, frame synchronization and bit synchronization and PVT is exported after resolving and is given core information process circuit, then is connected serial ports by interface management circuitry and be output to user equipment.

Low frequency interface in addition to connection power supply and serial ports also exports pulse per second (PPS) and completes time service simultaneously.

The above, is only the preferred embodiment of the utility model, and limit in any form is not done to the utility model System, every foundation the technical essence of the utility model each fall within any simple modification made for any of the above embodiments, equivalent variations Within the scope of protection of the utility model.

Above-mentioned implementation example is only that the preferred embodiment of the utility model is described, not new to this practicality The scope of type is defined, on the premise of the spirit of the design of the utility model is not departed from, this field ordinary skill technical staff couple The various modifications and improvement that technical solutions of the utility model are made should all fall into the guarantor that claims of the utility model determine In the range of shield.

Claims

1. a kind of double antenna high-dynamic GNSS receiver, including special outer box, the special outer box be built-in with receiver board and Main control board, which is characterized in that be equipped with forward and backward antenna in the special outer box, the receiver card is arranged with two, preceding Antenna is connected with the first receiver board, and aft antenna is connected with the second receiver board, in two receiver boards, arbitrarily One is used as reference receiver board, and sending position to another receiver board resolves update information；The main control board On be provided with core information processor, electric power management circuit and interface management circuitry；Two receiver boards receive respectively The satellite-signal of the forward and backward antenna carries out the location information of itself and resolves, and the location information that oneself is resolved and defends respectively Star raw information issues the core information processor of the main control board；The core information processor receives and resolves two The information and inertial guidance data that receiver is sent.

2. double antenna high-dynamic GNSS receiver according to claim 1, which is characterized in that wherein described two receivers Board includes sequentially connected preamplifier, low-converter, A/D converter and band signal processor respectively, described Band signal processor has the FPGA and dsp chip of the ability of igh-speed wire-rod production line, and it is defeated that FPGA receives the A/D converter The digital medium-frequency signal gone out, DSP implement to control by controlling bus to FPGA, replicate with the consistent local carrier of reception signal and Pseudo-code signal realizes the capture of signal, tracking, bit synchronous, frame synchronization process.

3. double antenna high-dynamic GNSS receiver according to claim 1 or 2, which is characterized in that the special outer box are The box body of square, the box body is formed by monoblock aluminium ingot milling, retains bottom opening, and outer eaves is consolidated with bottom plate using screw It is fixed.

4. double antenna high-dynamic GNSS receiver according to claim 3, which is characterized in that the box body is equipped with clamping Device.